diff --git a/.gitignore b/.gitignore
index a4c28b8..faad48e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 lp_solve_5.5.2.0_source.tar.gz
+/lp_solve_5.5.2.11_source.tar.gz
diff --git a/lp_solve-5.5.2.11-Port-to-C99.patch b/lp_solve-5.5.2.11-Port-to-C99.patch
new file mode 100644
index 0000000..55f0c24
--- /dev/null
+++ b/lp_solve-5.5.2.11-Port-to-C99.patch
@@ -0,0 +1,82 @@
+From dc262b45ae8c63be64fa38c7db0296e0d3889895 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
+Date: Wed, 7 Jun 2023 17:30:18 +0200
+Subject: [PATCH] Port to C99
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Port the ccc build configuration detection tool to C99 by
+specifying the return type of main as int.
+
+Submitted upstream:
+
+  <https://groups.google.com/g/lp_solve/c/WjVf0dxrwfQ/m/rKMwf57tAwAJ>
+
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ bfp/bfp_LUSOL/ccc | 2 +-
+ lp_solve/ccc      | 4 ++--
+ lpsolve55/ccc     | 4 ++--
+ 3 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/bfp/bfp_LUSOL/ccc b/bfp/bfp_LUSOL/ccc
+index 86b274c..a349345 100644
+--- a/bfp/bfp_LUSOL/ccc
++++ b/bfp/bfp_LUSOL/ccc
+@@ -7,7 +7,7 @@ c=${CC:-cc}
+ >/tmp/platform.c
+ echo '#include <stdlib.h>'>>/tmp/platform.c
+ echo '#include <stdio.h>'>>/tmp/platform.c
+-echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
++echo 'int main(void){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
+ $c $CFLAGS /tmp/platform.c $LDFLAGS -o /tmp/platform
+ PLATFORM=`/tmp/platform`
+ rm /tmp/platform /tmp/platform.c >/dev/null 2>&1
+diff --git a/lp_solve/ccc b/lp_solve/ccc
+index 83f21df..2e99f39 100644
+--- a/lp_solve/ccc
++++ b/lp_solve/ccc
+@@ -8,7 +8,7 @@ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
+ >"$MYTMP"/platform.c
+ echo '#include <stdlib.h>'>>"$MYTMP"/platform.c
+ echo '#include <stdio.h>'>>"$MYTMP"/platform.c
+-echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
++echo 'int main(void){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
+ $c $CFLAGS "$MYTMP"/platform.c $LDFLAGS -o "$MYTMP"/platform
+ PLATFORM=`"$MYTMP"/platform`
+ rm "$MYTMP"/platform "$MYTMP"/platform.c >/dev/null 2>&1
+@@ -22,7 +22,7 @@ math=-lm
+ echo '#include <stdio.h>'>>"$MYTMP"/isnan.c
+ echo '#include <stdlib.h>'>>"$MYTMP"/isnan.c
+ echo '#include <math.h>'>>"$MYTMP"/isnan.c
+-echo 'main(){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
++echo 'int main(void){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
+ $c $CFLAGS "$MYTMP"/isnan.c $LDFLAGS -o "$MYTMP"/isnan $math >/dev/null 2>&1
+ if [ $? = 0 ]
+ then NOISNAN=
+diff --git a/lpsolve55/ccc b/lpsolve55/ccc
+index 49cd7dc..59c720f 100644
+--- a/lpsolve55/ccc
++++ b/lpsolve55/ccc
+@@ -8,7 +8,7 @@ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
+ >"$MYTMP"/platform.c
+ echo '#include <stdlib.h>'>>"$MYTMP"/platform.c
+ echo '#include <stdio.h>'>>"$MYTMP"/platform.c
+-echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
++echo 'int main(void){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
+ $c $CFLAGS "$MYTMP"/platform.c $LDFLAGS -o "$MYTMP"/platform
+ PLATFORM=`"$MYTMP"/platform`
+ rm "$MYTMP"/platform "$MYTMP"/platform.c >/dev/null 2>&1
+@@ -20,7 +20,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
+ echo '#include <stdio.h>'>>"$MYTMP"/isnan.c
+ echo '#include <stdlib.h>'>>"$MYTMP"/isnan.c
+ echo '#include <math.h>'>>"$MYTMP"/isnan.c
+-echo 'main(){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
++echo 'int main(void){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
+ $c $CFLAGS "$MYTMP"/isnan.c $LDFLAGS -o "$MYTMP"/isnan $math >/dev/null 2>&1
+ if [ $? = 0 ]
+ then NOISNAN=
+-- 
+2.40.1
+
diff --git a/lp_solve-5.5.2.11-Respect-CC-CFLAGS-and-LDFLAGS.patch b/lp_solve-5.5.2.11-Respect-CC-CFLAGS-and-LDFLAGS.patch
new file mode 100644
index 0000000..ec20797
--- /dev/null
+++ b/lp_solve-5.5.2.11-Respect-CC-CFLAGS-and-LDFLAGS.patch
@@ -0,0 +1,193 @@
+From f29ae58ddc93d86504c7e646ec5e73befb36594c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
+Date: Wed, 7 Jun 2023 17:16:50 +0200
+Subject: [PATCH] Respect CC, CFLAGS, and LDFLAGS
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The distributions use these environment variables to compile their
+software uniformly. This patch modifies the ccc scripts to respect
+them.
+
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ bfp/bfp_LUSOL/ccc | 20 +++++++++-----------
+ demo/ccc          |  7 +++----
+ lp_solve/ccc      | 13 ++++++-------
+ lpsolve55/ccc     | 14 ++++++--------
+ 4 files changed, 24 insertions(+), 30 deletions(-)
+
+diff --git a/bfp/bfp_LUSOL/ccc b/bfp/bfp_LUSOL/ccc
+index 754738b..3ec9596 100644
+--- a/bfp/bfp_LUSOL/ccc
++++ b/bfp/bfp_LUSOL/ccc
+@@ -1,37 +1,35 @@
+ :
+ src='../../shared/commonlib.c ../../colamd/colamd.c lp_LUSOL.c ../../lp_utils.c ../../shared/myblas.c LUSOL/lusol.c'
+ 
+-c=cc
++c=${CC:-cc}
++CFLAGS=${CFLAGS:--O3}
+ 
+ #determine platform (32/64 bit)
+ >/tmp/platform.c
+ echo '#include <stdlib.h>'>>/tmp/platform.c
+ echo '#include <stdio.h>'>>/tmp/platform.c
+ echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
+-$c /tmp/platform.c -o /tmp/platform
++$c $CFLAGS /tmp/platform.c $LDFLAGS -o /tmp/platform
+ PLATFORM=`/tmp/platform`
+ rm /tmp/platform /tmp/platform.c >/dev/null 2>&1
+ 
+ mkdir bin bin/$PLATFORM >/dev/null 2>&1
+ 
+-opts='-O3'
+-#opts=''
+-
+ if [ "$PLATFORM" = "RS6000" ]
+-then opts="$opts"
++then
+      so="-bM:SRE -bE:../bfp_lpsolve.exp"
+      #so="$so -e _nostart"
+      so="$so -bnoentry"
+ elif [ "$PLATFORM" = "SCO_UNIX" ]
+ then
+-     opts='-O0'
+      so="-G -dy"
+-     opts="$opts -DNOLONGLONG $so"
+-else opts="$opts -fpic"
++     CFLAGS="${CFLAGS} -O0 -DNOLONGLONG $so"
++else
++     CFLAGS="${CFLAGS} -fpic"
+      so="-shared -Wl,-Bsymbolic -Wl,-soname,libbfp_LUSOL.so"
+ fi
+ 
+-$c -s -c $opts -I.. -I../.. -I../../colamd -I../../shared -ILUSOL -I. -DRoleIsExternalInvEngine -DINVERSE_ACTIVE=INVERSE_LUSOL $src
+-$c $so -o bin/$PLATFORM/libbfp_LUSOL.so `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'` -lc -lm -ldl
++$c $CFLAGS -c -I.. -I../.. -I../../colamd -I../../shared -ILUSOL -I. -DRoleIsExternalInvEngine -DINVERSE_ACTIVE=INVERSE_LUSOL $src
++$c $LDFLAGS $so -o bin/$PLATFORM/libbfp_LUSOL.so `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'` -lc -lm -ldl
+ 
+ rm *.o >/dev/null
+diff --git a/demo/ccc b/demo/ccc
+index 38713a1..154b898 100644
+--- a/demo/ccc
++++ b/demo/ccc
+@@ -1,5 +1,6 @@
+ src='../lp_MDO.c ../shared/commonlib.c ../colamd/colamd.c ../shared/mmio.c ../shared/myblas.c ../ini.c ../lp_rlp.c ../lp_crash.c ../bfp/bfp_LUSOL/lp_LUSOL.c ../bfp/bfp_LUSOL/LUSOL/lusol.c ../lp_Hash.c ../lp_lib.c ../lp_wlp.c ../lp_matrix.c ../lp_mipbb.c ../lp_MPS.c ../lp_params.c ../lp_presolve.c ../lp_price.c ../lp_pricePSE.c ../lp_report.c ../lp_scale.c ../lp_simplex.c ../lp_SOS.c ../lp_utils.c ../yacc_read.c'
+-c=cc
++c=${CC:-cc}
++CFLAGS=${CFLAGS:--O3}
+ 
+ math=-lm
+ 
+@@ -10,6 +11,4 @@ then def='-dy -K PIC -DNOLONGLONG'
+ else dl=-ldl
+ fi
+ 
+-opts='-O3'
+-
+-$c -I.. -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I../shared $opts $def -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine demo.c $src -o demo $math $dl
++$c $CFLAGS -I.. -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I../shared $def -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine demo.c $src $LDFLAGS -o demo $math $dl
+diff --git a/lp_solve/ccc b/lp_solve/ccc
+index bd5a938..fbb67d9 100644
+--- a/lp_solve/ccc
++++ b/lp_solve/ccc
+@@ -1,6 +1,7 @@
+ :
+ src='../lp_MDO.c ../shared/commonlib.c ../colamd/colamd.c ../shared/mmio.c ../shared/myblas.c ../ini.c ../fortify.c ../lp_rlp.c ../lp_crash.c ../bfp/bfp_LUSOL/lp_LUSOL.c ../bfp/bfp_LUSOL/LUSOL/lusol.c ../lp_Hash.c ../lp_lib.c ../lp_wlp.c ../lp_matrix.c ../lp_mipbb.c ../lp_MPS.c ../lp_params.c ../lp_presolve.c ../lp_price.c ../lp_pricePSE.c ../lp_report.c ../lp_scale.c ../lp_simplex.c lp_solve.c ../lp_SOS.c ../lp_utils.c ../yacc_read.c'
+-c=cc
++c=${CC:-cc}
++CFLAGS=${CFLAGS:--O3}
+ 
+ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
+ 
+@@ -9,7 +10,7 @@ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
+ echo '#include <stdlib.h>'>>"$MYTMP"/platform.c
+ echo '#include <stdio.h>'>>"$MYTMP"/platform.c
+ echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
+-$c "$MYTMP"/platform.c -o "$MYTMP"/platform
++$c $CFLAGS "$MYTMP"/platform.c $LDFLAGS -o "$MYTMP"/platform
+ PLATFORM=`"$MYTMP"/platform`
+ rm "$MYTMP"/platform "$MYTMP"/platform.c >/dev/null 2>&1
+ 
+@@ -23,23 +24,21 @@ echo '#include <stdio.h>'>>"$MYTMP"/isnan.c
+ echo '#include <stdlib.h>'>>"$MYTMP"/isnan.c
+ echo '#include <math.h>'>>"$MYTMP"/isnan.c
+ echo 'main(){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
+-$c "$MYTMP"/isnan.c -o "$MYTMP"/isnan $math >/dev/null 2>&1
++$c $CFLAGS "$MYTMP"/isnan.c $LDFLAGS -o "$MYTMP"/isnan $math >/dev/null 2>&1
+ if [ $? = 0 ]
+ then NOISNAN=
+ else NOISNAN=-DNOISNAN
+ fi
+ rm "$MYTMP"/isnan.c "$MYTMP"/isnan >/dev/null 2>&1
+ 
+-opts='-O3'
+-
+ rmdir "$MYTMP"
+ 
+ def=
+ if [ "$PLATFORM" = "SCO_UNIX" ]
+-then opts='-O0'
++then CFLAGS="${CFLAGS} -O0"
+      def='-dy -K PIC -DLLONG=long'
+      dl=-ldl
+ else dl=-ldl
+ fi
+ 
+-$c -I.. -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I../shared $opts $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src -o bin/$PLATFORM/lp_solve $math $dl
++$c $CFLAGS -I.. -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I../shared $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src $LDFLAGS -o bin/$PLATFORM/lp_solve $math $dl
+diff --git a/lpsolve55/ccc b/lpsolve55/ccc
+index 999f5f6..49cd7dc 100644
+--- a/lpsolve55/ccc
++++ b/lpsolve55/ccc
+@@ -1,6 +1,6 @@
+ :
+ src='../lp_MDO.c ../shared/commonlib.c ../shared/mmio.c ../shared/myblas.c ../ini.c ../fortify.c ../colamd/colamd.c ../lp_rlp.c ../lp_crash.c ../bfp/bfp_LUSOL/lp_LUSOL.c ../bfp/bfp_LUSOL/LUSOL/lusol.c ../lp_Hash.c ../lp_lib.c ../lp_wlp.c ../lp_matrix.c ../lp_mipbb.c ../lp_MPS.c ../lp_params.c ../lp_presolve.c ../lp_price.c ../lp_pricePSE.c ../lp_report.c ../lp_scale.c ../lp_simplex.c ../lp_SOS.c ../lp_utils.c ../yacc_read.c'
+-c=cc
++c=${CC:-cc}
+ 
+ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
+ 
+@@ -9,7 +9,7 @@ MYTMP=`mktemp -d "${TMPDIR:-/tmp}"/lp_solve_XXXXXX`
+ echo '#include <stdlib.h>'>>"$MYTMP"/platform.c
+ echo '#include <stdio.h>'>>"$MYTMP"/platform.c
+ echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>"$MYTMP"/platform.c
+-$c "$MYTMP"/platform.c -o "$MYTMP"/platform
++$c $CFLAGS "$MYTMP"/platform.c $LDFLAGS -o "$MYTMP"/platform
+ PLATFORM=`"$MYTMP"/platform`
+ rm "$MYTMP"/platform "$MYTMP"/platform.c >/dev/null 2>&1
+ 
+@@ -21,7 +21,7 @@ echo '#include <stdio.h>'>>"$MYTMP"/isnan.c
+ echo '#include <stdlib.h>'>>"$MYTMP"/isnan.c
+ echo '#include <math.h>'>>"$MYTMP"/isnan.c
+ echo 'main(){isnan(0.0);return 0;}'>>"$MYTMP"/isnan.c
+-$c "$MYTMP"/isnan.c -o "$MYTMP"/isnan $math >/dev/null 2>&1
++$c $CFLAGS "$MYTMP"/isnan.c $LDFLAGS -o "$MYTMP"/isnan $math >/dev/null 2>&1
+ if [ $? = 0 ]
+ then NOISNAN=
+ else NOISNAN=-DNOISNAN
+@@ -39,16 +39,14 @@ else dl=-ldl
+      so=y
+ fi
+ 
+-opts='-O3'
+-
+-$c -s -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd $opts $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
++$c $CFLAGS -fPIC -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
+ ar rv bin/$PLATFORM/liblpsolve55.a `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'`
+ ranlib bin/$PLATFORM/liblpsolve55.a
+ 
+ if [ "$so" != "" ]
+ then
+-  $c -fpic -s -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I. $opts $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
+-  $c -shared -Wl,-Bsymbolic -Wl,-soname,liblpsolve55.so -o bin/$PLATFORM/liblpsolve55.so `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'` -lc -lm -ldl
++  $c $CFLAGS -fPIC -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I. $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
++  $c $LDFLAGS -shared -Wl,-Bsymbolic -Wl,-soname,liblpsolve55.so -o bin/$PLATFORM/liblpsolve55.so `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'` -lc -lm -ldl
+ fi
+ 
+ rm *.o 2>/dev/null
+-- 
+2.40.1
+
diff --git a/lpsolve-5.5.0.11.cflags.patch b/lpsolve-5.5.0.11.cflags.patch
deleted file mode 100644
index 2471733..0000000
--- a/lpsolve-5.5.0.11.cflags.patch
+++ /dev/null
@@ -1,39 +0,0 @@
---- lp_solve_5.5/lpsolve55/ccc	2018-02-26 09:27:51.074682302 +0000
-+++ lp_solve_5.5/lpsolve55/ccc	2018-02-26 09:36:36.329990782 +0000
-@@ -35,16 +35,14 @@
-      so=y
- fi
- 
--opts='-O3'
--
--$c -s -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd $opts $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
-+$c $CFLAGS -fPIC -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
- ar rv bin/$PLATFORM/liblpsolve55.a `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'`
- ranlib bin/$PLATFORM/liblpsolve55.a
- 
- if [ "$so" != "" ]
- then
--  $c -fpic -s -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I. $opts $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
--  $c -shared -Wl,-Bsymbolic -Wl,-soname,liblpsolve55.so -o bin/$PLATFORM/liblpsolve55.so `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'` -lc -lm -ldl
-+  $c $CFLAGS -fPIC -c -I.. -I../shared -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I. $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src
-+  $c $LDFLAGS -shared -Wl,-Bsymbolic -Wl,-soname,liblpsolve55.so -o bin/$PLATFORM/liblpsolve55.so `echo $src|sed s/[.]c/.o/g|sed 's/[^ ]*\///g'` -lc -lm -ldl
- fi
- 
- rm *.o 2>/dev/null
---- lp_solve_5.5/lp_solve/ccc	2018-02-26 14:32:54.304981484 +0000
-+++ lp_solve_5.5/lp_solve/ccc	2018-02-26 14:34:03.524750992 +0000
-@@ -28,8 +28,6 @@
- fi
- rm /tmp/isnan.c /tmp/isnan >/dev/null 2>&1
- 
--opts='-O3'
--
- def=
- if [ "$PLATFORM" = "SCO_UNIX" ]
- then opts='-O0'
-@@ -38,4 +36,4 @@
- else dl=-ldl
- fi
- 
--$c -I.. -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I../shared $opts $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src -o bin/$PLATFORM/lp_solve $math $dl
-+$c $CFLAGS $LDFLAGS -I.. -I../bfp -I../bfp/bfp_LUSOL -I../bfp/bfp_LUSOL/LUSOL -I../colamd -I../shared $def $NOISNAN -DYY_NEVER_INTERACTIVE -DPARSER_LP -DINVERSE_ACTIVE=INVERSE_LUSOL -DRoleIsExternalInvEngine $src -o bin/$PLATFORM/lp_solve $math $dl
diff --git a/lpsolve-5.5.2.0.defines.patch b/lpsolve-5.5.2.0.defines.patch
deleted file mode 100644
index a325c13..0000000
--- a/lpsolve-5.5.2.0.defines.patch
+++ /dev/null
@@ -1,22 +0,0 @@
---- lp_solve_5.5/lpsolve55/ccc
-+++ lp_solve_5.5/lpsolve55/ccc
-@@ -18,7 +18,7 @@
- echo '#include <stdio.h>'>>/tmp/isnan.c
- echo '#include <stdlib.h>'>>/tmp/isnan.c
- echo '#include <math.h>'>>/tmp/isnan.c
--echo 'main(){isnan(0);}'>>/tmp/isnan.c
-+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
- $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
- if [ $? = 0 ]
- then NOISNAN=
---- lp_solve_5.5/lp_solve/ccc
-+++ lp_solve_5.5/lp_solve/ccc
-@@ -20,7 +20,7 @@
- echo '#include <stdio.h>'>>/tmp/isnan.c
- echo '#include <stdlib.h>'>>/tmp/isnan.c
- echo '#include <math.h>'>>/tmp/isnan.c
--echo 'main(){isnan(0);}'>>/tmp/isnan.c
-+echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
- $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
- if [ $? = 0 ]
- then NOISNAN=
diff --git a/lpsolve-ccc-c99.patch b/lpsolve-ccc-c99.patch
deleted file mode 100644
index 929138b..0000000
--- a/lpsolve-ccc-c99.patch
+++ /dev/null
@@ -1,51 +0,0 @@
-Port the ccc build configuration detection tool to C99 by
-specifying the return type of main as int.
-
-Submitted upstream:
-
-  <https://groups.google.com/g/lp_solve/c/WjVf0dxrwfQ/m/rKMwf57tAwAJ>
-
-diff --git a/lp_solve/ccc b/lp_solve/ccc
-index 9b79cea7ee71536c..b1f761aab33345d4 100644
---- a/lp_solve/ccc
-+++ b/lp_solve/ccc
-@@ -6,7 +6,7 @@ c=$CC
- >/tmp/platform.c
- echo '#include <stdlib.h>'>>/tmp/platform.c
- echo '#include <stdio.h>'>>/tmp/platform.c
--echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
-+echo 'int main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
- $c /tmp/platform.c -o /tmp/platform
- PLATFORM=`/tmp/platform`
- rm /tmp/platform /tmp/platform.c >/dev/null 2>&1
-@@ -20,7 +20,7 @@ math=-lm
- echo '#include <stdio.h>'>>/tmp/isnan.c
- echo '#include <stdlib.h>'>>/tmp/isnan.c
- echo '#include <math.h>'>>/tmp/isnan.c
--echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
-+echo 'int main(){isnan(0.0);}'>>/tmp/isnan.c
- $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
- if [ $? = 0 ]
- then NOISNAN=
-diff --git a/lpsolve55/ccc b/lpsolve55/ccc
-index 0470611bc45a851c..ca350f257add7730 100644
---- a/lpsolve55/ccc
-+++ b/lpsolve55/ccc
-@@ -6,7 +6,7 @@ c=$CC
- >/tmp/platform.c
- echo '#include <stdlib.h>'>>/tmp/platform.c
- echo '#include <stdio.h>'>>/tmp/platform.c
--echo 'main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
-+echo 'int main(){printf("ux%d", (int) (sizeof(void *)*8));}'>>/tmp/platform.c
- $c /tmp/platform.c -o /tmp/platform
- PLATFORM=`/tmp/platform`
- rm /tmp/platform /tmp/platform.c >/dev/null 2>&1
-@@ -18,7 +18,7 @@ mkdir bin bin/$PLATFORM >/dev/null 2>&1
- echo '#include <stdio.h>'>>/tmp/isnan.c
- echo '#include <stdlib.h>'>>/tmp/isnan.c
- echo '#include <math.h>'>>/tmp/isnan.c
--echo 'main(){isnan(0.0);}'>>/tmp/isnan.c
-+echo 'int main(){isnan(0.0);}'>>/tmp/isnan.c
- $c /tmp/isnan.c -o /tmp/isnan $math >/dev/null 2>&1
- if [ $? = 0 ]
- then NOISNAN=
diff --git a/lpsolve.spec b/lpsolve.spec
index c62bb61..8e8abae 100644
--- a/lpsolve.spec
+++ b/lpsolve.spec
@@ -1,9 +1,8 @@
 Name:       lpsolve
-Version:    5.5.2.0
-Release:    33%{?dist}
+Version:    5.5.2.11
+Release:    1%{?dist}
 Summary:    Mixed Integer Linear Programming (MILP) solver
 # bfp/bfp_LUSOL/lp_LUSOL.c:             LGPL-2.1-or-later
-# bfp/bfp_LUSOL/LUSOL/LUSOL_LGPL.txt:   LGLP-2.1 text
 # colamd/colamd.c:  ??? (free with attribution in Matlab)
 #                   Waiting on an identifier
 #                   <https://gitlab.com/fedora/legal/fedora-license-data/-/issues/230>
@@ -21,6 +20,8 @@ Summary:    Mixed Integer Linear Programming (MILP) solver
 # lp_pricePSE.c:    LGPL-2.1-or-later
 # lp_report.c:      LGPL-2.1-or-later
 # lp_rlp.c:         GPL-2.0-or-later WITH Bison-exception-2.2
+#                   Waiting on an approval
+#                   <https://gitlab.com/fedora/legal/fedora-license-data/-/issues/232>
 # lp_scale.c:       LGPL-2.1-or-later
 # lp_simplex.c:     LGPL-2.1-or-later
 # lp_SOS.c:         LGPL-2.1-or-later
@@ -32,11 +33,15 @@ Summary:    Mixed Integer Linear Programming (MILP) solver
 License:    LGPL-2.1-or-later AND GPL-2.0-or-later WITH Bison-exception-2.2
 # There is a mailing list at <https://groups.google.com/g/lp_solve>.
 URL:        https://sourceforge.net/projects/lpsolve
+# A separate documention at
+# <https://downloads.sourceforge.net/lpsolve/lp_solve_%%{version}_doc.tar.gz>
+# contains proprietary JavaScript files and javascript trackers.
 Source:     https://downloads.sourceforge.net/lpsolve/lp_solve_%{version}_source.tar.gz
-Patch0:     lpsolve-5.5.0.11.cflags.patch
-Patch1:     lpsolve-5.5.2.0.defines.patch
-Patch2:     read-cc-from-env.patch
-Patch3:     lpsolve-ccc-c99.patch
+# Use system-wide compiler, compiler and linker flags
+Patch0:     lp_solve-5.5.2.11-Respect-CC-CFLAGS-and-LDFLAGS.patch
+# Port to C99, GCC 14 will remove support for previous standards, proposed to
+# an upstream <https://groups.google.com/g/lp_solve/c/WjVf0dxrwfQ/m/rKMwf57tAwAJ>.
+Patch1:     lp_solve-5.5.2.11-Port-to-C99.patch
 BuildRequires:  bash
 # binutils for ar and ranlib
 BuildRequires:  binutils
@@ -60,15 +65,16 @@ Header files for developing with lpsolve library.
 %autosetup -p1 -n lp_solve_5.5
 sed -n -e '/Authors:/,/http:\/\/www\.cise\.ufl/p' < colamd/colamd.c \
     > colamd/colamd_license
+chmod -x lp_lib.h
 
 %build
 %set_build_flags
 pushd lpsolve55
-sh ccc
+sh -x ccc
 rm bin/ux*/liblpsolve55.a
 popd
 pushd lp_solve
-sh ccc
+sh -x ccc
 popd
 
 %install
@@ -80,18 +86,26 @@ install -p -m 755 \
 install -p -m 644 \
         lp*.h %{buildroot}%{_includedir}/lpsolve
 
+%check
+%set_build_flags
+LP_PATH="$(echo lpsolve55/bin/ux*)"
+${CC} ${CFLAGS} -I. demo/demo.c ${LDFLAGS} -L"$LP_PATH" -llpsolve55
+LD_LIBRARY_PATH="$LP_PATH" ./a.out </dev/null
+
 %files
-%license bfp/bfp_LUSOL/LUSOL/LUSOL_LGPL.txt colamd/colamd_license
-# LUSOL_Overview.txt is identical to LUSOL-overview.txt
-%doc README.txt ./bfp/bfp_LUSOL/LUSOL/LUSOL_README.txt ./bfp/bfp_LUSOL/LUSOL/LUSOL-overview.txt
+%license colamd/colamd_license
+%doc README.txt
 %{_bindir}/lp_solve
 %{_libdir}/liblpsolve55.so
 
 %files devel
-# TODO: Package a separate documention from lp_solve_%%{version}_doc.tar.gz.
+%doc demo/demo.c
 %{_includedir}/lpsolve
 
 %changelog
+* Wed Jun 07 2023 Petr Pisar <ppisar@redhat.com> - 5.5.2.11-1
+- 5.5.2.11 bump
+
 * Wed Jun 07 2023 Petr Pisar <ppisar@redhat.com> - 5.5.2.0-33
 - Modernize a spec file
 - Partially correct a license tag
diff --git a/read-cc-from-env.patch b/read-cc-from-env.patch
deleted file mode 100644
index 85c7320..0000000
--- a/read-cc-from-env.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-diff -ruN lp_solve_5.5.orig/lp_solve/ccc lp_solve_5.5/lp_solve/ccc
---- lp_solve_5.5.orig/lp_solve/ccc	2020-12-08 12:24:15.118953722 +0100
-+++ lp_solve_5.5/lp_solve/ccc	2020-12-08 12:49:39.661428497 +0100
-@@ -1,6 +1,6 @@
- :
- src='../lp_MDO.c ../shared/commonlib.c ../colamd/colamd.c ../shared/mmio.c ../shared/myblas.c ../ini.c ../fortify.c ../lp_rlp.c ../lp_crash.c ../bfp/bfp_LUSOL/lp_LUSOL.c ../bfp/bfp_LUSOL/LUSOL/lusol.c ../lp_Hash.c ../lp_lib.c ../lp_wlp.c ../lp_matrix.c ../lp_mipbb.c ../lp_MPS.c ../lp_params.c ../lp_presolve.c ../lp_price.c ../lp_pricePSE.c ../lp_report.c ../lp_scale.c ../lp_simplex.c lp_solve.c ../lp_SOS.c ../lp_utils.c ../yacc_read.c'
--c=cc
-+c=$CC
- 
- #determine platform (32/64 bit)
- >/tmp/platform.c
-diff -ruN lp_solve_5.5.orig/lpsolve55/ccc lp_solve_5.5/lpsolve55/ccc
---- lp_solve_5.5.orig/lpsolve55/ccc	2020-12-08 12:24:15.118953722 +0100
-+++ lp_solve_5.5/lpsolve55/ccc	2020-12-08 12:40:22.677752522 +0100
-@@ -1,6 +1,6 @@
- :
- src='../lp_MDO.c ../shared/commonlib.c ../shared/mmio.c ../shared/myblas.c ../ini.c ../fortify.c ../colamd/colamd.c ../lp_rlp.c ../lp_crash.c ../bfp/bfp_LUSOL/lp_LUSOL.c ../bfp/bfp_LUSOL/LUSOL/lusol.c ../lp_Hash.c ../lp_lib.c ../lp_wlp.c ../lp_matrix.c ../lp_mipbb.c ../lp_MPS.c ../lp_params.c ../lp_presolve.c ../lp_price.c ../lp_pricePSE.c ../lp_report.c ../lp_scale.c ../lp_simplex.c ../lp_SOS.c ../lp_utils.c ../yacc_read.c'
--c=cc
-+c=$CC
- 
- #determine platform (32/64 bit)
- >/tmp/platform.c
diff --git a/sources b/sources
index 0df0a76..5389ee4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-167c0fb4ab178e0b7ab50bf0a635a836  lp_solve_5.5.2.0_source.tar.gz
+SHA512 (lp_solve_5.5.2.11_source.tar.gz) = 24f5a14d0c77a71e1ab3f46e08ea3f85f2f116ae2d3d2c54acddc5fb138251ba258240284060827e1b8b7ef15d580acecc242329ec775802fe5e8028407499bc