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32 lines
760 B
32 lines
760 B
https://bugs.gentoo.org/516274
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diff --git a/cc_help.sh.in b/cc_help.sh.in
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index b20feb6..1820304 100644
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--- a/cc_help.sh.in
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+++ b/cc_help.sh.in
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@@ -7,2 +7,3 @@ LIBS_PNG='@LIBS_PNG@'
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LIBS_TIFF='@LIBS_TIFF@'
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+LIBS_MATH='@LIBS_MATH@'
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ENABLE_DEBUG='@ENABLE_DEBUG@'
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diff --git a/configure.in b/configure.in
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index d11f42c..459ad8f 100644
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--- a/configure.in
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+++ b/configure.in
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@@ -125,2 +125,8 @@ fi
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+LIBS=""
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+AC_SEARCH_LIBS([pow], [m], [LIBS_MATH="$LIBS"], [
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+ AC_MSG_ERROR([unable to find the pow() function])
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+])
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+AC_SUBST(LIBS_MATH)
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+
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dnl Checks for header files.
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diff --git a/do.sh b/do.sh
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index fa15db8..0e9f449 100755
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--- a/do.sh
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+++ b/do.sh
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@@ -117,3 +117,3 @@ SOURCES='png22pnm.c'
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TARGET=png22pnm
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-LIBS="$LIBS_PNG"
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+LIBS="$LIBS_PNG $LIBS_MATH"
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build
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